Machine for applying activating liquids to cemented shoe parts



June 2, 1936. c. A. NEWHALL 2,042,479

MACHINE FOR APPLYING ACTIVATING LIQUIDS TO CEMENTED SHOE PARTS FiledOct. 5, 1953 5 Sheets-Sheet 1 m #5 a; ma

/NVE/V TUEL June 2, 1936. 2,042,479

MACHINE FOR APPLYING ACTIVATING LIQUIDS TO GEMENTED SHOE PARTS C. A.NEWHALL 5 Sheets-Shet 2 Filed 001:. 5, 1933 June 2, 1936 c. A. NEWHALLMACHINE FOR APPLYING ACTIVATING LIQUIDS TO CEMEN'IIED SHOE PARTS FiledOct. 5, 19:53 5 Sheets-Sheet 3 June 2, 1936. c. A. NEWHALL MACHINE FORAPPLYING ACTIVATING LIQUIDS TO CEMENTED SHOE PARTS Filed 0631;. 5, 19355 She ets-Sheet 4 June 2, 1936. c. A. NEWHALL I MACHINE FOR APPLYINGACTIVATING LIQUIDS TO CEMENTED SHOE PARTS Filed 001;. 5, 1953 5Sheets-Sheet 5 ga -MM Patented June 2, 1936 UNETED STATES MACHINE FORAPPLYING ACTIVATING LIQUIDS T CEIVIENTED SHOE PARTS Carl A. Newhall,Peabody, Mass., assignor to United Shoe Machine N. J., a corporation 0Application October 5,

ry Corporation, Paterson, f New Jersey 1933, Serial No. 692,307

In Great B 'tain October 10, 1932 2'7 Claims.

This invention relates to machines for preparing soles for incorporationin shoes, especially by the application of a solvent to activate a drycoating of cement upon a sole which is to be 5 attached to a shoepermanently by means of cement.

In the manufacture of compo shoes inwhich the outsole is secured to theshoe bottom by cement a .common practice is to apply a coating of cementcontaining pyroxylin or other cellulose derivative to the flesh surfaceor attaching face of an outsole. requently this is applied in the formof a marginal stripe which may not extend fully to the edge of the soleand this coating is usually allowed to dry as the soles are accumulatedprior to the time when they are needed for incorporation in shoes.Usually the shoe bottom is also provided with a stripe of cement whichis allowed to dry. Just before the outsole is to be applied to the shoebottom the cement coating on the outsole is activated by applyingthereto a solvent for the cement, whereupon the shoe and outsole arebrought into close contact in a press, such, for example, as thatdescribed in the application for Letters Patent of the United States ofMilton H. Ballard et al., Serial No. 636,202, filed October 4, 1932,until the cement has dried sufficiently to secure the outsole properlyin place on the shoe- It has I been a common practice hitherto to applya liquid solvent to the cement coating on .the sole and to put it onmanually by means of a brush. This practice is, however, disadvantageousfrom many points of view since, for example, the application may beuneven and the cement may be displaced by the dragging action of thebrush, and the solvent, unless great care is taken, may spread over themid-portion of the sole where it is not needed or get on the edge andtread surface of the sole with a consequent danger of staining. Morerecently there has been used with great satisfaction an activator in theform of a highly viscous solvent. One form of such a softener isdescribed in Letters Patent of the United States No. 1,959,321, grantedMay 15, 1934 upon an application filed in the name of 'Walter H. Wedger,wherein there is set forth certain desirable results which accrue fromthe use of such a solvent, such as the ability to apply the solvent in apredetermined position from which it is not readilydisplaced, thegreater ease with which the sole thus coated may be handled and thereduction in the length of time during which the shoe must remain in thepress. A

lessened danger of squeeze-out, when pressure is applied, is anotherimportant advantage.

The application of viscous solvent of this type is facilitated by theuse, in a machine of the extrusion type, of a nozzle having a pluralityof capillary tubes by which the solvent may be applied uniformly inridge-like threads, in just the desired quantities. This is not claimedbroadly herein, however, since it forms the subjectmatter of anapplication of J .-W. Johnson, Serial No. 692,043, filed October 3,1933.

An object of the present invention is to provide an improved machine bymeans of which a uni form coating may be applied quickly and in justthedesired location.

In the illustrated machine, a nozzle having capillary delivery tubes isemployed and the outlet openings of the tubes in the nozzle are'arrangedalong a line approximately as long as the width of the marginal band tobe coated. An important feature of the invention resides in anarrangement of this nozzle with respect to the guiding means such thatthe clean margin between the outer extremity of the nozzle and the edgeof the sole is maintained constant and'such that the width of the bandover which the activating fluid is to be applied is also maintainedconstant. As illustrated one extremity of the nozzle is positionedclosely adjacent to one of the sole edge gaging members thus keeping theclean edge margin constant. Also as illustrated, and in order to apply aseries of stripes or a band of solvent of uniform width, the line of thetubes in the illustrated construction makes an acute angle with the lineof feed and converges toward that line in the direction of movement ofthe sole.

Preferably the line of the tubes extends approximately between the pointof contact with' the forward gaging member and the center of turningmovement for radically curved convex portions of the sole.

The ease with which the machine may beeperated and the productionobtainable with the machine are both greatly improved by the provision,in accordance with another feature of the invention, of improvedwork-feeding mechanism enabling the margin of a piece of work presentedto the machine to be fed automatically at a substantial uniform speedpast the outlet of the nozzle with its capillary tubes. The line oifeedis preferably determined by means of spaced edge gages which, in theillustrated construction, are separated sufiiciently to allow sharplycurved portions of a sole, such as the toe ends thereof, to enter thespace between the contact points of the gage and thus to facilitatekeeping the feeding mechanism in operative engagement with the workinstead of having it run off the edge thereof. The spacing, however, islimited to a distance such that with respect to that portion of the gagewhich is last encountered during the movement of a sole there is nosubstantial variation in the point of contact between the sole and thisgage as between straight portions of the sole and the curved portionsthereof, thus enabling the production of a uniform margin between theouter edge of the coated area and the edge of the sole.

Automatic feeding of the work and hence maintenance of contact betweenthe sole and the edge gage is provided in accordance with anotherfeature of the invention by novel feeding mechanism operating both tocause progressive forward movement of the work andto exert a forcetransversely of the direction of feeding movement to maintain contactbetween the sole and the edge gage. This is accomplished in oneillustrated form of the invention by means of two pairs of rotatablegripping members, one of which is driven, which engage the margin of thesole at points spaced transversely of the line of feed and in which, asillustrated, one of the rolls away from the gage is brakedintermittently to set up a couple operating to force the edge of thesole constantly into engagement with the edge gage. In anotherillustrated form of the invention coacting feed rolls engaging oppositefaces of the sole are constructed and arranged to impart a feeding forcein a direction angularly related to the line of feed and which, asshown, converges therewith in the forward direction means.

These and other features of the invention will become clear to thoseskilled in the art from the following description taken in connectionwith the accompanying drawings, in which of a supporting column;

Fig. 2 is a plan view, partly in section on the line II'II of Fig. 1, ofthe driving mechanism, the pump having been removed;

Fig. 3 is a sectional view on an enlarged scale of a by-pass valve takenalong'the line III-III of Fig. 1;

machine, certain Fig. 5 is an end view partly in elevation and machineis equipped;

Fig. 6 is a front elevational view on an enlarged parts of the machinewhich are outside of the frame;

Fig. 10 is a plan view showing a sole supported upon the lower'feedrolls and. to a portion of which parallel threads, of solvent have beenapplied;

Fig. 11 is a plan'view of the parts shown in Fig. 9 with the gage anddelivery conduit removed, showing the valve-actuating mechanism;

Fig. 12 is a fragmentary plan view of the worksupporting rolls andtable;

Fig. 13 is an end elevation of the work-feeding mechanism and anism;

Fig. 14 is a detail in plan of the upper face of the nozzle supportremoved from the machine;

Fig. 15 is a vertical section on the line XV-XV of Fig. 14 of anotherform of nozzle adapted to do the work of the nozzle shown in Fig. 1;

Fig. 16 is a fragmentary section through the lower endof the nozzleshown in Fig. 15 in a plane normal to the plane of that section;

Fig. 17 is a similar section of still another apply the solvent in acontinuous ribbon instead of in separated stripes;

Fig. 18 is a plan view of the work showing the ribbon of solvent whichis applied by the nozzle of Fig. 17 to a sole; and p Fig. 19 is afragmentary angular view of the feed rolls, edge gages, and the nozzle.

The machine comprises a rectangular container i for holding a supply ofviscous cement-softening solvent which commonly contains a celluwhichthe pump tion by bolts 4|.

I5 is carried, being held As may be seen from in posithe terminalfitting 46 of a piece of flexible pressure tubing 5| The other end ofthis tubing 5| is joined toa T-piece 53 at the front of the machine theupper side of this T-piece being conthe nozzle-supporting mechnected toa pressure gage 55 and the lower side being connected to a shut-ofivalve 51. The bypass valve block 58, mounted directly on the pump by ascrew 69 (see Fig. 3), is provided with a passageway 59 which extendsbetween vertical passages communicating with the inlet and outlet sidesof the pump I5. This passage 59 is normally closed by a plunger 6Imounted in a recess cut in a valve control 63 which is in threadedrelation with the pump casing. A compression spring 65, of which oneend'bears against the end of the recess in the valve control 63 and theother bears against a shoulder formed on the plunger, tends to maintainthe plunger GI in a position in which it closes the passageway 59. Thearrangement is such, however, that the pressure of solvent built up bythe pump I5 will not exceed a certain value, for should this tend totake place the spring 65 will not be strong enough to maintain theplunger in position closing the passageway 59 and solvent will flowthrough this by-pass from the outlet to the inlet side of the pump. Thepressure which the pump is allowed to build up may be adjusted byturning the valve control 63, which is provided with a knurled head 1|,thereby altering the compression of the spring 65.

Solvent is thus delivered under pressure controlled by adjustment of theby-pass valve to a nozzle comprising four capillary tubes 11 from whichit is extruded upon the work. To this end, the lower side of the valve51 is connected to a member 13 (Figs. 6 and 7) through suitable passagesin which and in a block 15 the solvent has I access to the capillarytubes 11. The upper ends of these tubes are soldered in a plate 19 whichis secured, by screws 8| (Fig. 6) engaging in openended slots in.theplate 19, to a bracket 93. The bracket 83 is itself secured by a screw85 to a frame arm 91 which projects outwardly from the end of the casing9 (Fig. 1), being fixed thereby by screws 89. As seen in Fig. '1, thecapillary tubes 11 pass through a recess 82 in the bracket 83 and do notall lie in one plane, the outer capillary tube (at the left in Fig. 6)being straight; but the others being bent at gradually increasing anglesto the vertical so that their lower ends assume a-position advantageousin determining a uniform position of the deposited solvent as will belater explained.

To insure good operation of the machine it is desirable that the ends ofthe capillary tubes shall be kept as close to the work as can beconveniently done without having them drag on the work. An adjustment isprovided whereby their distance from the work may be altered. The plate19 has a number of small screws I91 in threaded relation therewith thelower ends of which bear against the top surface of the bracket 83. Byadjusting these screws the plate 19 carrying the tubes 11 may be raisedor lowered with respect to the bracket 83 and so the distance of theends of the capillary tubes from the surface of the work varied.

As has been already mentioned, the solvent commonly used in the machinecontains a dissolved cellulose derivative. If the vmachine is leftstanding for some time the solvent at the tips of the capillary tubes 11will harden but the machine is supplied with a convenient arrangementwhereby such hardening may be minimized and the ends of the tubesreadily wiped clean. On a bracket 223 (Fig. 1), secured by screws 225 tothe front of the casing 9, is mounted a sight feed cup 221 which isfilled with acetone or other solvent. This cup is connected by a tube229 with an aperture 239' in a member 23I (Fig. 7)

secured to the member 13 by a screw 233. The end of the tube 229 is heldin place by a block 235 mounted on the member 23I by a screw 231.

From the aperture in the member 23I four capillary tubes 239 are mountedin the member 23I lead respectively to points just adjacent the outsidesurface of each of the tubes 11, but spaced upwardly from the ends ofthe tubes 11. The flow of acetone (or other solvent) to the tubes 239 iscontrolled by a valve in the sight feed cup 221, which valve iscontrolled by a lever 2M. It may be convenient to adjust the valve sothat even when the machine is running occasional drops of acetone areallowed to flow down the outside surface of the tubes 11. The number ofdrops issuing from the cup 221 can be counted at an opening 243. Themember 23I, as shown in Fig. 7, is provided with a projecting portion295 through small holes in which the tubes 11 also pass to give themadded rigidity.

In order that the stripes of solvent may be laid uniformly along themargin of a piece of work, provision is made for feeding a piece ofwork, such as a sole S (Fig. 8) at substantially uniform linear speedbeneath the tubes or nozzles 11. For this purpose there is provided aknurled feed roll 93 (Figs. 4, 6 and '7) adapted to engage the topsurf-ace of the sole being operated upon. The frame arm 81 has journaledin a bore therein a shaft 9| at the outer end of which is mounted thisfeed roll 93. The shaft 91 is driven from the shaft 21 by gears 95 and91 (Fig. l). Mounted below the knurled feed roll 93 and adapted tocooperate therewith to grip the work is a driven, smooth, feed roll 99which is mounted on a shaft I9I which is journaled in a tiltable bracketI93.

This bracket projects through a suitable aperture in the end wall of thecasing 9 and is forked within the casing, as shown in Fig. 2, to providelateral arms I95. The end wall of the casing has 'two lugs I91projecting therefrom toward the inside. Two coaxial set-screws I99 withconical ends and threaded in these lugs are normally held in adjustedposition by lock-nuts III and engage in recessesin the arms I95, therebyforming a pivot about which the bracket I93 may tilt. The bracket I93has also an inwardly extending arm H3. The outer end of the bracket I93is normally in a lowered position determined by engagement of the arm II3 with an adjustable stop screw II5 within the casing which is carriedby an arm lI1 secured to the step 39 by one of the bolts 4|. Treadlemeans is, however, provided whereby the bracket I93 may be tilted whenwork is introduced into the machine so that the work may be grippedbetween the rolls 93 and 99. Pivoted to the base of a column (not shown)is a treadle I2I which is normally held in a raised position by a spring(not shown). This treadle I2I is connected to a lever I29 by a chainI25,

' which passes centrally upwardly through a sleeve 2I5 carried at thehead of the column and upon which sleeve the machine is secured byscrews 2I1. The lever I29 is secured to a pivot shaft I3I (Fig. 1)mounted at its opposite ends in the casing 9. The lever I29 has an armI32 from the end of which a rod I33 projects upwardly and at its upperend is connected to one end of a second lever I35 which is fixedlysecured near its middle to a rockshaft I31. The back end of the leverI35'is connected to a tension spring I39 (Fig. 2)

which normally pulls it downwardly and so pulls the rod I33 upwardly.Upon depression of the portion of the pin treadie I2I, however, the rodI33 isdrawn dow wardly. This causes depression of the. arm H3, which isforked at its inner end to receive the rod I33, by force transmittedthrough a spring I which surrounds the rod I33 and is confined at itsupper end by a fixedcollar I 43 and which bears at its lower end againsta washer I45 which rests on the arm H3. This yielding depression of thearm H3 causes yielding upward movement of the outer end of the tiltablebracket I 03 and so movement of the feed roll 99 toward the feed roll 93to grip the work. The shaft IOI which carries the feed roll 99 is drivenfrom the shaft 9| by gears I41 and I49.

' Besides causing the outer portion of the tiltable bracket I03 to riseand grip the sole, depression of the treadle I2I is also effective toopen the valve 51 to allow solvent to be extruded through thecapillarytubes 11. For this purpose the rockshaft I31 is provided with a. forkedend I93 which embraces the head of the valve 51 and is spring-pressedthereagainst by a spring,

I95. The arrangement is such that when it is desired to'disassemble themachine and remove the nozzle, the rockshaft I31 may be pushed to theright against the tension of the spring I95 thereby disengaging theforked end I93 from the valve 51. When the treadle is depressed thevalve 51 is turned from its closed into its open position.

The speed of .operation upon the work is increased by an automatic feedmechanism which eliminates the necessity for guiding each piece of workby hand after it has been started through the machine, by mechanicallyurging the work into contact with gages I and I89 which determine theline of feed. Accordingly, in addition to the feed rolls 93 and 99, themachine is provided with a pair of idle rolls I5I and I53 adapted togrip a sole S being operated upon along a line parallel with the edge ofthe sole but spaced inwardly half an inch or more from the edge. Thelower roll I53 has a smooth surface and is freely rotatable in a bracketI55 pivoted by a pin I51 to a lug I59 projecting downwardly from thetiltable bracket I 03. The bracket I 55 is yieldably upheld by a springI6! which is enclosed between the lower surface of the bracket and thehead of a screw I63 threaded into the tiltable bracket I03 and passingthrough an aperture in the bracket I55. Upward movement of the bracketI55 is limited by an adjusting screw I65, threaded in the bracket I55,the end of which screw bears against the lower surface of the bracketI03. The upper roll I5I has a knurled peripheral surface and is mountedin a lug I61 depending from the forward end ofthe bracket 83. Mountedalso in the bracket 83 is a vertical pin I69 on the lower end of whichis fixedly mounted a short arm carrying a depending brake I1I (Figs. 4and 6). Surrounding the upper IE9 is a torsion spring I13 (Fig. 7) oneend of-which is fixed to the bracket 83 and the other to a collar I15fixed to the pin by a setscrew I11. This spring normally tends to turnthe pin so that the brake IN is forced against the inner surface of theroll I 5I to resist rotation thereof. Extending inwardly from the brakeand also integral with the pin I69 is.a lever I19 (Fig. 4) to which issecured an extension I83 substantially at right angles thereto. A boltI8I with a squared portion received in a square opening in the lever I19passes through a slot in the extension I 83 and is clamped thereto by a.nut on the bolt. The extension I83 of the lever I 19 curves downwardlyto the front (Fig. 7) and carabout the axis of the pin I69 (as looked atfrom I above). This will cause the brake "I to move out of contact withand to release the roll I5I. Such inward motion of the plate I85 underthe pressure of a sole is limited by an adjustable stop I81. Thenormally fixed back edge gage I89 has an upright portion for contactwith-the edge of the work and a horizontal flange I88 having a slotextending from the rear edge toward the front. Through this slot extendsa screw I9I into a square plate vI94. This plate I94 has a slot I96(Fig. 4) through which passes a screw I92 into the frame arm 81. Byloosening the screw I92, the gage may beadjusted toward and away fromthe feed roll 93 while by loosening the screw I9I, the gage may beadjusted from front 25 plate I 85 to press it rearwardly and so prevent35 the friction brake I1I bearing against the roll I5I.

'When, on account of the changing contour of the sole, it fails to touchthe plate I85 (the condition illustrated in Fig. 4) the brake "I ispressed impositively by the spring I13 against 40 the roll I5I and,varying its speed of rotation, tends to stop it. A force or couple isthen set up on the sole between the braked roll I5I and the positivelydriven feed roll 93 which swings the sole once more into contact withthe plate I85, 45

thereby relieving this intermittent braking action. The arrangementjustdescribed provides an automatic mechanism for causing proper feed of thesole which carries the entire marginal portion of the sole to be treatedbeneath the nozzle 50 made up of the capillary tubes 11.

It will be seen from Figs. 4 and 7 that the axis of the roll I5I isoffset rearwardly with respect to the axis of the feed roll 93. The axisof the roll I53 is also offset rearwardly with respect to the 55 axis ofthe feed roll 99 by a similar amount (Fig. 2). This has been done to geta minimum draggmg of the roll I5I across the surface of a sole as thelatter is turned sharply as at the toe. The point of contact of the rollapproximately in the perpendicular bisector of a line connecting thepoint of contact I89 of the sole with the edge gage I89 and the point ofcontact with the gage plate I 85. This would be the best position atleast if the piece of work to be 65 handled were circular. Though thework will not be circular, the position just mentioned is the one bestadapted to handle the pointed toes of soles to be treated. If thisposition were changed in one direction it would cause the roll I5I todrag 70 over the sole just before the latter gets to the tu ning point,and if it were offset in theother direction it would cause the slippageto occur upon the other side of the turning point. The

plate I85 is preferably offset slightly to the right, 75

ISI with the sole lies 69 as seen in Fig. 4, of a line perpendicular tothe shaft 9| and passing through the point of Figs. 9 to 13, partscorresponding to those in the form shown in Fig. 1 have been given thesame reference numerals. This arrangement embodies another form ofautomatic sole feeding mechanism, a specifically different nozzle andanother arrangement for supporting the nozzle. Here the sole S isengaged by a thin disk-like feed roll 258 which is mounted on the drivenshaft 9! extending through an arm 81' essentially like the arm 81 of thefirst form. Coacting with this feed roll 258 is a driven supporting roll252 mounted on the driven shaft IN and of combined cylindrical andfrusto-conical cross-section. The sole is also supported by an idle roll253 corresponding to the idle roll I53 of the machine of Fig. 1 but ofslightly different shape. Disposed adjacent to the upper feed roll 258is a nozzle 256, to be later described, provided at its upper end with ablock 258 having a laterally projecting portion 268 (Fig. 14). Thisblock 258 is adjustably clamped to a bracket 262 by means of a screw 2B4passing through a horizontal slot in the extension 268. The coactingfaces of the block 258 and the bracket 262 are provided with a rib andgroove, respectively, to facilitate locating the nozzle upon thebracket. This bracket has a slot extending parallel to the shaft 9|through which passes a screw 266 to attach the bracket adjustably to aforked support 218 having legs 212 (Fig. 11) by means of which thesupport and bracket are swingingly mounted upon the rigid arm 81' whichis attached to the frame of the machine. Conical pivot screws 214 heldin adjusted position by lock nuts form a'bearing between the support 218and the arm 81'. This provides a swinging mounting for the nozzle 256which permits it to ride over inequalities in the work and facilitatesadjustment of the lowest position of the nozzle, which is determined bya stop-screw 216 extending downwardly from the bracket 262 and abuttingthe upper surface of the arm 81'.

Thenozzle block 258 is attached by screws to a valve block 288 having amovable valve memher 282 and threaded at its upper end into the T-piece53 providing connection to the flexible pressure tube 5| and to. thegage 55. One end of the valve member 282 is cylindrical and providedwith a squared recess 284 across which extends a pin 285. Engaging thispin is a forked end 288 of a valve-operating rod 298. This forked end ismade partially cylindrical, as indicated in Fig. 9, thereby to providewith the pin 286 a universal joint between the valve member and the rod298. The other end 292 (Fig. 11) of the rod 299 is made partiallycylindrical about an axis normal to the axis of the end 288 and isforked to engage a transverse pin 294 in a cylindrical block 296 pinnedto a rockshaft I3'l' operating substantially like, the rockshaft I31 ofFig. 1 but having the location of the spring I95 changed to a point (notshown) near the far end of the rockshaft. This spring urges the'rockshaft to the left to hold the forked member 288 in operativeengagement with the pin 286, the limit of movement being determined by acollar 298. As in Fig. 1, this rockshaftis connected to anoperator-controlled treadle so that the valve is opened whenever the armI83 is raised to grip the sole S between the feed rolls 258 and 252.

Mounted on the lower arm I83 which carries the lower feed roll is awork-supporting table 388 (Fig. 19) the upper surface of which isapproximately at the level of the top of the lower feed roll 252. Thisis held in position by a clamp screw 382 and, for facility in setting upthe machine, is adjustable horizontally in a path parallel to the axisof the feed roll shaft IN. The edge of the table which is approached bya sole passing'through the machine is somewhat relieved or depressed, asshown in Fig. 13, to avoid any danger of the sole catching thereon. Thistable serves the purpose of keeping the sole from tipping to such anextent that it no longer contacts with the lower end of the 'nozzle 256(Fig.

13) especially at those times when the major axis of the sole is atright angles to the axes of the feed rolls.

Coacting with the feed rolls and contacting with the edge of a sole todetermine its line of feed are spaced edge gages. A back gage 384 isclamped in position on the arm '81 by a'screw 386 (Fig. 9) coming upfrom beneath the gage and a front edge gage 388 is clamped on the arm81' by a screw 3l8.' Horizontal slots in each of these gages provide fortheir adjustment, primarily in setting up the machine. The front edgegage 388 is grooved to receive the edge of the sole, as is shown inFigs. 10 and 19, for-a purpose to be later described, and has anoverhanging upper flange extending a substantial distance to the rear.grooved portion comprises only a triangular mem-;

ber the edge of which extends fromthe point of contact 3l4 with the soledirectly toward the,

front of the machine and then to the right. To the rear of the point ofcontact 3. the gage is grooved inwardly, providing upper and lowerflanges between which curved portions such as the toe of the sole willbe received and guided. The back edge gage 384 has a sharp cornerforming a contact point 3|2. In front of this corner the gage ispartially notched, leaving an underlying portion which is not cut awayand. which serves to support the toe end of the sole. Less sharplycurved portions of the sole will not be received to any substantialextent between the back flanges of the front gage nor will they overlieto any extent this uncut-away portion of the back gage.

The line of feed is determined by the contact 'points 3l2, 3l4 of thegages and, as in the form of the machine shown in Fig. 1, a sole whengripped. by the feed rolls will have its periphery automaticallypresented to the nozzle to receive solv ent upon the stripe of cementwhich usually extends along the sides and around the toe. While in themachine of Fig. 1 the coacting feed rolls 93 and 99 are depended uponprimarily to cause the sole to move forwardly, the action is such in thearrangement shown in Fig, 9 that the coacting feed rolls 258 and 252,which are positioned opposite the first sole-engaging co tact point 3 tobe encountered by the sole, operate not only to apply a force which w111cause forward movement of the sole but which will also have a lateralcomponent urging the sole into contact with the guiding means. In themachine of Fig. 1 these feed rolls which coact with the outer marginalportion of the sole are substantially parallel to the line of feed,whereas in the machine of Fig. 9, as will b clear from an inspection ofFigs. 10 and 11, the feeding force is imparted in a .direction (as de-The bottom flange of the.

termined for example by the intersection of the fering with thedeposition thenozzle in this form of to float upon the surface thesurface of the work) which is angularly related to the line of feed andforms an acute angle converging forwardly in the direction of feed. Byreason of this relation, the feed roll or disk 250 not only causesforward progression of the work but is also effective to turn the soleat sharply curved portions thereof, thereby to maintain the sole incontact with the edge gages and to exert a drag upon it for thatpurpose.

The nozzles shown in Figs. 15 and '17 embody all the advantages of theseparate tubes shown in Fig. 1 and at the same time provide certainadditional advantages. It has been found that the separate tubes of Fig.1, being of very small size, are quite readily bent by accidental impacttherewith as, for example, when cleaning the machine and, accordingly,one substantial advantage is attained by mounting these tubes in a rigidcasing 320 in which individual tubes 322 are inserted through holesdrilled in the end of the nozzle casing. The casing 320 is made hollowand is dented at 32| adjacent the feed roll 250 to give greaterclearance. Its lower end is flared at 324 to correspondwith the width ofthe stripe of cement which is to be activated. A transverse groove inthe lower end of the casing is flooded with solder 325 to seal the tubesto the casing. In this casing the tubes may be set either inan uprightposition, or inclined as at 326, without affecting the resultantoperation except, of course, that the inclined tubes will have a lateraldirectional efiect upon the thread 01 extruded solvent which is of noconsequence when the nozzle is close to the work. The lower end or toe321 of the casing drags or floats on the sole S (Fig. 16) and thereforemaintains the upper'edges of the inclined ends of the tubes at a uniformdistance above the work as the sole moves in the direction of the arrow.on its leaving or forward side, the casing and the ends of the tubes arecut off at an acute angle with the work. The nozzle therefore depositsthreads of solvent X having a curved or ridgelike cross-section whichmay be semi-circular. Partly by virtue of the rigidity of the casing inwhich the tubes are supported, it is possible to bring the lower end 321of the nozzle closer to the work than would be done with the singletubes without danger of damage to the machine by accidental contact. Itwill be noted also that the machine is allowed of the work by reason ofthe pivotal mounting of the bracket arm 210 already described.Furthermore, as will be noted from Fig. 16, the nozzle may be broughtinto close relation to the work without interthereon of ridge-likethreads of solvent the position of which will be accurately controlledby the position of the'outlets'of the tubes at the lower end of thenozzle.

When it is desired to use solvent of rather I light viscosity so thatseparated stripes or threads would tend to flatten out quickly bei'orepressure is applied, it is found desirable to employ a constructionshown in sectien in Fig. 17, in which witha deeper slot 332 across thelower end drilled for the insertion of tubes 322 or 326 and in whichonly a portion of this slot is filled with solder, leaving a spacebetween the ends of the tubes and the work determined by the distancebetweenthe ends of the tubes and the workoontacting end 334 of thenozzle. On its forward and, hence, the leaving side (note the arrow inFig. 1'7), the tip of the nozzle is cut back to I portion of the recessin the hub 342.

and perhaps merge very a casing 330 is provided form a shoulder or ledge336 which extends across the whole width of the nozzle along the line oftubes. With this arrangement the solvent extruded from the tubes iscontrolled as to drip-. ping and speed and velocity of extrusion exactlyas in the other forms, but will be permitted to merge or coalesce into asingle band or ribbon B. This band or ribbon R will be more or lesssmooth, due to contact of the ledge 336 with the'top surface of theband, and it cannot be substantially thicker than the distance betweenthis ledge 336 and the upper surface of the work. The edges of theribbon R will lie substantially parallel to the edge of the sole, andthe width of this ribbon may be exactly the same as that of the stripeof dry cement or it may be narrower than said stripe and may be spacedinwardly from the outer edge thereof to avoid squeeze-out.

It may be desired, in order to avoid wear of the operating parts of themachine and of the pump, to provide a clutch between the drive shaft 21and the gears 25, 95. To this end, there is illustrated in Figs. 1 and 9a clutch mechanism which is embodied in said gears and which is closedwhenever the operator depresses the treadle to grip the work between thefeed rolls. In this arrangement. the gear 25 is recessed to receive aclutch sleeve 340. This sleeve .is held to the gear by a drive fit andis provided upon its outer end with ratchet teeth. The gear 25 has anextended hub 342 upon which a ring gear is secured in gripping relation.An outer clutch part 344 is pinned to the drive shaft 21 and has aflange 346 coacting with a spring positioned in an enlarged This springtends normally to separate the clutch parts. In order to close theclutch, the shaft 21 is moved axially by a cam surface 348 upon an arm350 pinned to the pivot shaft l3l to which is secured the lever I23(Fig. 1) directly connected to the treadle. Thus, when the treadle isdepressed, the shaft 21 is moved axially a short distance to push theclutch part 344 into engagement with the inner clutch part 3411 therebyto drivethe gears 25, 35 and hence the machine from said shaft. If thiscam action were positive and the teeth of the clutch did not immediatelyslide into mesh, as illustrated in Fig. 9, there might be danger ofbreaking these teeth. This danger is overcome by a spring 352surrounding the pivot shaft [3i and placed between the casing 9 and thehub of the arm 350, thus permitting the slight axial displacement ofthis pivot'shaft which may be required if the teeth of the clutch do notimmediately engage. When the machine is arranged thus, the shaft l3l isprovided with a collar 354 (Fig. 1) adjacent to the inner side of therighthand portion of the casing 9 to prevent the spring 352 from pushingsaid pivot shaft out of proper relation to the other parts of themachine.

In Figs. 10 and 11, the positions of the outlet openings of the tubesare indicated by a row of small circles and the disposition of this rowwith respect to the gages and the feed rolls is of importance insecuring satisfactory operation of the machine. In Fig. 4 the ends ofthe tubesare also apparent, being disposed alo g a line inclined to theaxis of the shaft 9|. Where it is not important to deposit the solventin such a fashion that the outer thread of solvent is very close to theedge of the sole, then the construction shown in Figs. 1 and 4 iseminently satisfactory. If, on the 1 posit the solvent very near theedge of the sole, the construction shown in Figs. 9 and 10 isadvantageous. With the latter construction it is possible to get theouter end of the nozzle closer to the edge of the sole withoutinterference between the nozzle and the upper feed disk 250 because ofthe angular relation between the line of feed and this disk. In order toobtain a uniform width of clean margin m (Fig. 8) between the outer edgeof the applied solvent and the edge of the sole, it is important, witheither the arrangement of Fig. 4 or that of Fig. 10, to locate the endapplying tube rather close to the contact point between the sole and theback edge gage 304, indicated in Fig. 10 as the point 312. With thatarrangement there will be no substantial variation in the distancebetween the tube and the contact point, regardless of whether a straightside of the sole or a curved portion, such as the toe end, is beingtreated. Location of this end tube either beyond the gage in thedirection of feed or between the two gages, if that were possible, wouldresult in very substantial variations in the width of the clean marginm.

Furthermore, in order to get a uniform distance between the oppositeedges of the applied stripes X of solvent or of the applied ribbon R, asshown in Fig. 18, it is important to locate the line of tube openings ofthe nozzle in a particular relation to the line of feed. Theposition'which best serves this purpose is one in which the line of tubeopenings substantially coincides with a line drawn from the point ofcontact 3IZ- of the sole with the back gage to a point which representsapproximately the center of turning movement of sharply convexly curvedportions of a particular average sole. This will usually lieapproximately in a perpendicular bisector of a line interconnecting thecontact points 3l2 and 3H, for example, and in Fig. 4 will fallapproximately at the point where the braked roll l5l contacts with thework. If, on the other hand, this line of tube openings and hence theelongated outlet of the nozzle should be located along a line normal tothe line of feed, then the inner edge of the applied solvent would notbe parallel to the outer edge of the sole, and in some portions,especially at the toe end thereof, the coated band would be reduced to awidth which might be only twenty-five per cent of the width obtained atpoints along relatively straight Sides of the sole. Capillary tubes asemployed in this machine can be manufactured with considerable precisionwithout undue cost, and the size of tubes selected depends upon theviscosity of the particular material which i to be handled. If thesolvent is heavy and viscous, larger tubes are needed in order toextrude the same amount at a 'selected pressure than will be the case ifthe solvent is relatively light and less viscous. The bores of tubeswhich have been found to be satisfactory with commercial solvents are ofthe order of .018 of an inch and .025 of an inch, although with someparticularly heavy solvents the bore may be, for example, of the orderof .044 of an inch. One essential feature of the selection is'that thebore shall have such a relation to the viscosity of the solvent thatwhen the shut-off val ."e 51 is closed, the solvent remaining in thetubes will be retained therein by the capillary action of the tubes uponthe solvent. This avoids dripping from the nozzle, with the consequentdisadvantageous soiling of the lower feed rolls and eventually of thework and is of great importance in the application of materials having acellulose derivative because of deposits from the work. It is importantalso that the tubes shall be of suflicient length to provide africtional resistance to the passage of the solvent which is in contactwith the inner walls of the tubes; to the end that any relatively largemomentary v ariations in pressure will be smoothed out or absorbed and auniform thread of solvent deposited upon the work. This frictionalresistance varies with the square of the velocity of the solvent-andhence increases very fast with increasing pressure, The particular pumpselected is commercially satisfactory and tends to produce a reasonablysteady pressure. It is found, however, that there are momentaryfluctuations in the pressure which are of suificient magnitude to applya thoroughly unsatisfactory deposit of solvent were it not for theaction of the tubes in eliminating this difiiculty. This nozzleconstruction has 'not been claimed broadly herein, however, since itforms the subject matter of an application Serial No. 759,915, filedDecember 31, 193%, in the name of J. W. Johnson. The method, broadly, ofapplying solvent by means of such a nozzle is claimed in an applicationSerial No. 692,043, filed October 3, 1933, in the name of J. W. Johnson.

In view of the fact that the sole-feeding mechanisms are arranged tourge the sole forcibly against the front edge gage to maintain the lineof feed and enable the feeding operation to be automatic, there arises adifficulty because of the thin edges of the reduced shank portions ofthe sole. If the sole is pushed against the edge gage too hard, thisthin edge may be rolled up. By,

having the gage grooved, however, the rollingup tendency is eitherentirely prevented or minimized to'a point where it is of no effect.This effect is particularly noticeable in a molded sole where, near theend of the traversing movement 'of the sole, the feed rollpasses fromthe forepart of the sole on to the shank. The forepart of the sole willhave been traveling in a substantially horizontal plane whereas theshank portion will be bent upwardly. If this shank portion, which thedifficulty in removing accidental.

is thin and therefore somewhat flexible, should be I forced against anedge gage having only an upright plane surface, there would be a doubletendency to curl the edge of the sole and to prevent the gage fromproperly positioning the sole with respect to the nozzle.

It will be observed from Fig. 10, that the sole contacts with the backedge gage 304 at a sharp corner 312, and that the sole contacts with thefront edge gage 308 along a narrow curved portion 3M. These gages 304and 308, although they are actually separate members as described, couldbe made integral. It is of importance, however, that the contact points3 l 2 and 3M shall be spaced from one another and separated by a recessin order that the sharply curved portions of a sole such as the toe end3I9 may project inwardly of the line of feed slightlyin order to give abetter opportunity for the feed rolls to grip the work and to minimizethe danger of the sole passing out of engagement with the feed rollsbefore the turning force imparted to the sole to hold it against theedge gages has time to act. If the contact points 3|2 and 3M wereconnected by a straight surface so that the toe end 3l9 could notproject inwardly thereof, then the grip of the feed rolls upon the toeend would be very slight. It is important, however, that the spacingbetween the contact points 3l2, 3M shall-not be great or lastencountered gage 304.

enough to vary substantially the location of the point M2 at which thesole contacts with the back Such a variation would occur if the sharplycurved end of the sole, as the toe end, were allowed to protrude intothe space between the gages and would cause a variation in the distancebetween the end of the nozzle and the edge of the sole. It wouldtherefore cause a variation in the width of the clean margin between thethe sole.

In the use of the machine, assuming that the machine parts have beenproperly adjusted; the operator will introduce a. cement-coated sole towhich solvent is to be applied, flesh (i. e., cement- 51 to allowsolvent to be extruded from the capilor the nozzle 256 on to the work.The by-pass-control 63 will have previously been turning its head ll sothat the pump and the machinery for attaching the soles to the shoes isrendered capable of large production. If the nozzle of Figs. 17 and 18is used, the solvent Will be applied in a ribbon R. Although the machinehas been particularly described with reference to its use in applyingsolvent, it will be understood that it is also applicable for use inapplying cement.

Having described my invention, what I claim as newand desire to secureby Letters Patent of the United States is:

1. In a solvent-extruding machine, a receptacle, a nozzle connectedthereto, means for applying pressure to the solvent to force it throughthe nozzle, said nozzle comprising a casing closed at its outer endexcept that it is provided with spaced perforations, the inner end ofsaid casing applied solvent and the edge of ing pressure to the beingconnected to said pressure applying means, and capillary tubes withinsaid nozzle having their outer ends extending through and sealed in saidperforations, said capillary tubes extending back into the nozzleunsupported other than by the thickness of the nozzle wall for adistance sufficient to reduce to a minimum variations in appliedpressure whereby a uniform quantityof solvent is deposited upon eachpart of the work.

2. In a solvent-extruding machine, means for feeding a piece of work, areceptacle for solvent, a nozzle connected to the receptacle fordepositing solvent upon the margin of the work as it is moved by saidfeeding means, means for applysolvent to force it through the nozzle,said nozzle being provided with a plurality of capillary tubes throughwhich the solvent is extruded and having a work-contacting surfacerearward of the tubes and extending beyond the tubes, and means formovably supporting said nozzle to float on the work.

3. In a solvent-extruding machine, a receptacle, a nozzle connectedthereto, means for applying pressure to the solvent to force it throughthe nozzle, said nozzle comprising a casing closed I at its outer' endand provided with a transverse groove connected to the inside of thecasing by spaced perforations, capillary tubes passing spacedperforations, capillary tubes passing through said perforations asubstantial distance inside the nozzle and secured therein in tightrelation, a toe rearward of said groove adapted to rest on the work, anda ledge forward of said groove and spaced from the work for smoothingout the applied solvent.

5. A machine for applying a stripe of solvent to the margin of a sole,spaced gaging contact points for determining the direction of feed,cooperating feeding members for gripping the margin of the sole close tothe gaging points, said feeding means being constructed and arranged tomaintain the engagement of the edge of the sole with said gaging pointsalong both straight and curved portions of the sole, and a.solvent-applying nozzle fixed against forward movement with the sole andadapted to apat its lower end and provided with a transverse grooveconnected to the inside of the casing by ply solvent to the sole withina band spaced adjacent to one of said gaging pointswh'ereby the cleanmargin between the stripe of solvent and the edge of the sole ismaintained uniform around the periphery of the sole.

6. A machine'for applying a stripe of solvent to the margin of a sole,spaced sole-gaging members, feeding members for gripping the sole, saidfeeding members being constructed and arranged to maintain the edge ofthe sole in contact with both gaging members and to turn radicallyconvexly curved portions of the sole such as the toe end thereof abouta, center located approximately upon the perpendicular bisector of aline connecting said gaging points, and a solvent apply-' ing nozzlefixed against movement along the sur- 75 face being operated upon andhaving its outlet surface of the work along a path spaced from extendedsubstantially along a line including the the edge thereof, and means forcontrolling the point of contact of one gaging member with the operationof said roll constructed and arranged work and said turning pointwhereby the width to vary its speed of rotation with respect to the ofthe coated area is maintained substantially first-mentioned feedingmeans.

uniform about the periphery of the sole. 14. In a machine for operatinup Shoe parts, '7. In a machine for applying a stripe of solan p r i gtool, an edge gage, nd mean for vent to the margin of a sole, means forfeeding automatically p t ngthe periphery of a shoe said sole, gagingmeans spaced from one another P to Said comprieing feeding e ns nforjointly determining a line of feed, and a 501- ag ng the edge of thework, means for e t l0 vent-applying nozzle the elongated outlet openadrag upon the Work at a P t Spaced inwardly ing of which extends alongline making an of the work from the feeding means comprising a gle lessthan a right angle with said line of feed. You engaging the Surface othe Work, and means 3, In a machine for applying a Stripe of 1-impositively connected tosaid roll for controlling vent to the margin ofa sole, successively contacted paced gaging means for determining a andin engagement the edge gage. line of feed, means for feeding said soleand hold- In a machine for Opera-ting p S oe parts, ing it against saidgaging means, and a solventanfipemting 13001, l edge gage, d means forapplying nozzle having its elongated Outlet automatically presentmg theperiphery of a shoe tending along a line making an acute angle with theline of feed and converging toward said line of feed in the direction ofmovement of the sole. 9. In a machine for applying a stripe of solventto the margin of the sole, successively contacted spaced gaging membersfor determining a line of feed, means for feeding said sole and holdingit against said gaging members, and asolvent applying nozzle having anelongated outlet one end of which is adjacent to the last encounteredgage member and which lies along a t t to 1 h line converging with theline of feed in the direcpar Sal cmpnsmemeens engagmg e tion of movementof the Sole. margin of the work and feedmg it to the tool, and 10' In amachine for applying a stripe of sob means for swinging sa d work tohold 1t against vent to the margin of a sole, spaced edge gages of 1:edge gage compnsmg.a'n mtemlttently which the one last encountered has aprojecting portion 'of limited area for contact with the sole, igg zg tgigi g gg fi a 5223:3 21?- asolvent-applying nozzle, and sole-feedingmechl g g p d P anism the spacing between said gages being an operaftmgtoo ge an means for limited to a distance such that the point ofconautoma'mcguy presentmg pentmery of a Shoe tact between the sole andthe projecting portion t tool compnsmg a par 9 .feed mus 40 of that gagewhich is last encountered during fol. gnppmg the means for dnvtngpne ofprogress of the sole does not vary substantially Sam r0115 another ofrolls for grlppme the between straight portions of the sole and curvedWork alimg t f path and.means Inter portions thereof. ngteterfit y ;es1sin; the prorgrlelzssgille mggemen? of ts o 0 5a: secon pair 0 o s ong esur ace 4r a 1 g i' g gigg is: 5: g :3 32:5: of the work constructed andarranged to urge the d automatically presenting the periphery of a shoei g iigggfi gggf g u on Shoe a t part to said tool comprising a pair offeed rolls n r t 1 g g p d p 2 for gripping the outer margin of the workadjaope mg 00 ge an means r cent to the edge means for driving one ofsaid automatically presentmg. t penrihery of a shoe rolls means forengaging the sole at a point P to Sam tool compnsmg feedutg meansseparated from the edge thereof more widely Jacent to t edge gagecooperatmg Wlth t than the feed rolls and adapted to drag thereon Outermargm of work and means for exertmg intermittently, and means responsiveto the posidrag pprtlon of the work epamted from tion of the edge of thework which is approaching the edge mgludmg y? engagmg the Surface theedge gage for controlling the dragging action of the work and lmpositwemeans for controlling of Said engaging memm I the effect of said roll onthe work. V

12 In a machine for operating upon shoe parts In magljlme for Coatmgprogresslvely t an o'pemting tool an edge gage and means 1 penpheralportions of detached soles, a coating automatically presenting theperiphery of a shoe I tg h gi f gz i iifig gf 5 ggzfig 232$: part tosaid tool comprising a pair of feed rolls ing i for g g thessolpatpoints i ig fifg l :g gg 3 :5? fg g g izf i gi transversely of the lineof feed, one of said rolls nearer the gage being driven to efiect afeeding means for gnppmg the sole at pomt more widely movement of thesole, and means for intermitone, of which is driven, for gripping theouter margin of the work adjacent to the edge, means for gripping thesole at a point more widely separated from the edge including a rollengaging one surface of the work and adapted to drag thereon, 25 andwork-controlled frictional means to vary the dragging action of thelatter roll.

16. In a machine for operating upon shoe parts, an operating tool, anedge gage, and means for.

separated from the edge thereof including a roll tenfly braking one ofSaid Tons away from the engaging one surface of the work and adapted t t1 t f th to drag thereon, and frictional means for congage 0 Se up csmpeOQera mg 0 one e edge of the sole persistently mto engagement wlthtrolling the dragging action of said latter roll.

In a machine f operating upon Shoe parts said edge gage thereby torender automatic the an operating tool, an edge gage, and means forfeeding of the eautomatically presenting the periphery of a shoe In amachine for Coating progressively t part-to said tool comprising meansengaging the peripheral portions of detached soles, a coat ng margin ofthe work and feeding it to the tool, tool, an d a l d adla nt t t atmeans for swinging said work to hold it against tool, and meansincluding two pairs of rotatable the edge gage comprising a rollengaging the gripping members, one of which is driven, for

its effect upon the work thereby to twist the work 15 part to said toolcomprising a pair of feed rolls, 20

automatically presenting the periphery of a shoe 30 lied drag memberengaging the surface of the 5 gripping the margin of the sole at pointsspaced transversely of the line of feed and constructed and arrangedautomaticallyto maintain the sole in engagement with the edge gagethereby to feed a sole around its periphery without guidance by theoperator.

21. In a machine for coating progressively the peripheral portions ofdetached soles, a coating tool, spaced edge gages located adjacent tothe coating tool to engage the edge of the sole at points spaced alongthe line of feed, and rolls beside and between said gages engaging thetop and bottom of the sole to gripit, one of said rolls being driven tofeed the work, said rolls being arranged to set up a force operatingtransversely of the line of feed thereby to maintain the edge of thesole automatically in contact with the edge gages.

22. In a machine for coating progressively the peripheral portions ofdetached soles, a coating tool, spaced edge gages located adjacent tothe coating tool to engage the edge of the sole at points along the lineof feed, and rolls, at least one of which is driven,.ior engaging thetop and bottom surfaces of the sole to grip it, said rolls operating toexert a force transversely of the direction of feed of the sole to holdthe edge of the sole automatically in contact with the edge gages as thesole is fed thereby mechanically to guide the sole for the treatment ofa substantial portion of its periphery. I

23. In a machine for applying a stripe of cement tothe margin of a sole,a cement-applying device, means arranged for contact with the edge ofthe sole for guiding said sole in a predetermined direction, and feedrolls coacting with one another to engage the opposite'faces of saidsole constructed and arranged to impart a feeding force angularlyrelated to the predeterward movement of the sole and the other of whichurges the sole into contact with said guiding means.

' 24. In a machine for applying a stripe of cemerit to the margin of oneface of a sole, a cementapplying device cooperating with said margin, anedge gage adjacent to said cement-applying device, a sole-supportingroll, and a narrow feed roll having an end face disposed in a planeforming an acute angle with the line of feed as determined by the edgegage whereby the force imparted by the feed roll, resulting in a forwardcomponent and a lateral component, tends to hold the sole against theedge gage.

25. In a machine for applying a stripe of cement tothe margin of a sole,a cement-applying device I coacting with the upper face of the sole, anedge gage comprising spaced sole-contacting elements together definingthe line of feed, and sole-feeding means including a driven feed diskdisposed at an acute angle to the line of feed so that the plane of saiddisk converges forwardly with the direction of feed, said diskcontacting with the Work opposite the first encountered gage element.

26. In a machine for applying a stripe of solvent to the margin of asole, a solvent-applying nozzle, cooperating gripping members one ofwhich is driven to feed the sole, and spaced soleedge-gaging members todetermine the line of feed, that gaging member which is firstencountered being provided with a groove to receive the edge of thesole.

27. In a machine for extruding coating material, means for feeding apiece of work, a receptacle for coating material, a nozzle connected tothe receptacle for depositing coating material upon the margin of thework as it is moved by said feeding means, and means for applyingpressure to the coating material to force it through the nozzle, saidnozzle being provided with a plurality of capillary passages throughwhich the coating material is extruded and having a work contactingsurface rearward of the outlets of the passages whereby the passages arenot blocked by contact with the work.

' CARL A. NEWHALL.

